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Dynamic Response of a Digital Displacement Motor Operating with Various Displacement Strategies

Author

Listed:
  • Sondre Nordås

    (Department of Engineering and Science, University of Agder, 4879 Grimstad, Norway)

  • Michael M. Beck

    (Department of Energy Technology, Aalborg University, 9220 Aalborg East, Denmark)

  • Morten K. Ebbesen

    (Department of Engineering and Science, University of Agder, 4879 Grimstad, Norway)

  • Torben O. Andersen

    (Department of Energy Technology, Aalborg University, 9220 Aalborg East, Denmark)

Abstract

Digital displacement technology has the potential of revolutionizing the performance of hydraulic piston pumps and motors. Instead of connecting each cylinder chamber to high and low pressure in conjunction with the shaft position, two electrically-controlled on/off valves are connected to each chamber. This allows for individual cylinder chamber control. Variable displacement can be achieved by using different displacement strategies, like for example the full stroke, partial stroke, or sequential partial stroke displacement strategy. Each displacement strategy has its transient and steady-state characteristics. This paper provides a detailed simulation analysis of the transient and steady-state response of a digital displacement motor running with various displacement strategies. The non-linear digital displacement motor model is verified by experimental work on a radial piston motor.

Suggested Citation

  • Sondre Nordås & Michael M. Beck & Morten K. Ebbesen & Torben O. Andersen, 2019. "Dynamic Response of a Digital Displacement Motor Operating with Various Displacement Strategies," Energies, MDPI, vol. 12(9), pages 1-25, May.
  • Handle: RePEc:gam:jeners:v:12:y:2019:i:9:p:1737-:d:229163
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